The Bank of Maas is a project which explores the changes in the urban fabric of Rotterdam, occurring as a result of technological developments. The project reflects on these developments, and utilizes them in order to create a condition for urban production to take place. The Bank of Maas is a project which provides Rotterdam with the productive resources necessary to the functioning of a modern-day city. It does that by creating spaces for production and storage, supported by smart production tools and an innovative storage technology. The project explores the relationship between the industry 4.0. ( production based on automation and smart technologies) and dense urban environments. By bringing production back into the inner city, the Bank aims to consolidate industry 4.0 with local skilled labor and local raw materials. The project of the Bank of Maas is an experiment, imagining a future in which cities exist as productive, well connected bodies in itself, facilitated with a network of productive resource banks.